Function TriggerRoadStopAnimation

src/newgrf_roadstop.cpp:381–408

}

void TriggerRoadStopAnimation(BaseStation *st, TileIndex trigger_tile, StationAnimationTrigger trigger, CargoType cargo_type)
{
	assert(st != nullptr);

	/* Check the cached animation trigger bitmask to see if we need
	 * to bother with any further processing. */
	if (!st->cached_roadstop_anim_triggers.Test(trigger)) return;

	uint16_t random_bits = Random();
	auto process_tile = [&](TileIndex cur_tile) {
		const RoadStopSpec *ss = GetRoadStopSpec(cur_tile);
		if (ss != nullptr && ss->animation.triggers.Test(trigger)) {
			uint8_t var18_extra = 0;
			if (IsValidCargoType(cargo_type)) {
				var18_extra |= ss->grf_prop.grffile->cargo_map[cargo_type] << 8;
			}
			RoadStopAnimationBase::ChangeAnimationFrame(CBID_STATION_ANIMATION_TRIGGER, ss, st, cur_tile, (random_bits << 16) | GB(Random(), 0, 16), to_underlying(trigger) | var18_extra);
		}
	};

	if (trigger == StationAnimationTrigger::NewCargo || trigger == StationAnimationTrigger::CargoTaken || trigger == StationAnimationTrigger::AcceptanceTick) {
		for (const RoadStopTileData &tile_data : st->custom_roadstop_tile_data) {
			process_tile(tile_data.tile);
		}
	} else {
		process_tile(trigger_tile);
	}
}

/**
 * Trigger road stop randomisation